The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
A superfície inteligente reconfigurável (RIS) tem a capacidade de aumentar o desempenho do sistema manipulando o ambiente de propagação sem fio. Este artigo investiga um sistema de acesso múltiplo não ortogonal (NOMA) auxiliado por RIS de downlink, onde um RIS é implantado para aumentar a segurança da camada física (PLS) na presença de um bisbilhoteiro. Para melhorar a segurança do link principal, o RIS é implantado entre a fonte e os usuários, no qual um esquema de separação de elementos refletivos é desenvolvido para auxiliar a transmissão de dados tanto do centro da célula quanto dos usuários da borda da célula. Além disso, as expressões fechadas da probabilidade de interrupção de sigilo (SOP) são derivadas para o esquema NOMA proposto com auxílio de RIS. Para obter insights mais profundos sobre os resultados derivados, o desempenho assintótico do SOP derivado é analisado. Além disso, a ordem de diversidade de sigilo é derivada de acordo com a aproximação assintótica no regime de alta relação sinal-ruído (SNR) e razão principal para bisbilhoteiro (MER). Além disso, com base nos resultados derivados, o coeficiente de alocação de potência e o número de elementos são otimizados para minimizar o SOP do sistema. As simulações demonstram que os resultados teóricos combinam bem com os resultados da simulação e o SOP do esquema proposto é claramente menor do que o do esquema convencional de acesso múltiplo ortogonal (OMA), obviamente.
Shu XU
Nanjing University of Posts and Telecommunications
Chen LIU
Nanjing University of Posts and Telecommunications
Hong WANG
Nanjing University of Posts and Telecommunications
Mujun QIAN
Nanjing University of Posts and Telecommunications
Jin LI
Nanjing University of Posts and Telecommunications
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Shu XU, Chen LIU, Hong WANG, Mujun QIAN, Jin LI, "On Secrecy Performance Analysis for Downlink RIS-Aided NOMA Systems" in IEICE TRANSACTIONS on Communications,
vol. E106-B, no. 5, pp. 402-415, May 2023, doi: 10.1587/transcom.2022EBP3082.
Abstract: Reconfigurable intelligent surface (RIS) has the capability of boosting system performance by manipulating the wireless propagation environment. This paper investigates a downlink RIS-aided non-orthogonal multiple access (NOMA) system, where a RIS is deployed to enhance physical-layer security (PLS) in the presence of an eavesdropper. In order to improve the main link's security, the RIS is deployed between the source and the users, in which a reflecting element separation scheme is developed to aid data transmission of both the cell-center and the cell-edge users. Additionally, the closed-form expressions of secrecy outage probability (SOP) are derived for the proposed RIS-aided NOMA scheme. To obtain more deep insights on the derived results, the asymptotic performance of the derived SOP is analyzed. Moreover, the secrecy diversity order is derived according to the asymptotic approximation in the high signal-to-noise ratio (SNR) and main-to-eavesdropper ratio (MER) regime. Furthermore, based on the derived results, the power allocation coefficient and number of elements are optimized to minimize the system SOP. Simulations demonstrate that the theoretical results match well with the simulation results and the SOP of the proposed scheme is clearly less than that of the conventional orthogonal multiple access (OMA) scheme obviously.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2022EBP3082/_p
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@ARTICLE{e106-b_5_402,
author={Shu XU, Chen LIU, Hong WANG, Mujun QIAN, Jin LI, },
journal={IEICE TRANSACTIONS on Communications},
title={On Secrecy Performance Analysis for Downlink RIS-Aided NOMA Systems},
year={2023},
volume={E106-B},
number={5},
pages={402-415},
abstract={Reconfigurable intelligent surface (RIS) has the capability of boosting system performance by manipulating the wireless propagation environment. This paper investigates a downlink RIS-aided non-orthogonal multiple access (NOMA) system, where a RIS is deployed to enhance physical-layer security (PLS) in the presence of an eavesdropper. In order to improve the main link's security, the RIS is deployed between the source and the users, in which a reflecting element separation scheme is developed to aid data transmission of both the cell-center and the cell-edge users. Additionally, the closed-form expressions of secrecy outage probability (SOP) are derived for the proposed RIS-aided NOMA scheme. To obtain more deep insights on the derived results, the asymptotic performance of the derived SOP is analyzed. Moreover, the secrecy diversity order is derived according to the asymptotic approximation in the high signal-to-noise ratio (SNR) and main-to-eavesdropper ratio (MER) regime. Furthermore, based on the derived results, the power allocation coefficient and number of elements are optimized to minimize the system SOP. Simulations demonstrate that the theoretical results match well with the simulation results and the SOP of the proposed scheme is clearly less than that of the conventional orthogonal multiple access (OMA) scheme obviously.},
keywords={},
doi={10.1587/transcom.2022EBP3082},
ISSN={1745-1345},
month={May},}
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TY - JOUR
TI - On Secrecy Performance Analysis for Downlink RIS-Aided NOMA Systems
T2 - IEICE TRANSACTIONS on Communications
SP - 402
EP - 415
AU - Shu XU
AU - Chen LIU
AU - Hong WANG
AU - Mujun QIAN
AU - Jin LI
PY - 2023
DO - 10.1587/transcom.2022EBP3082
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E106-B
IS - 5
JA - IEICE TRANSACTIONS on Communications
Y1 - May 2023
AB - Reconfigurable intelligent surface (RIS) has the capability of boosting system performance by manipulating the wireless propagation environment. This paper investigates a downlink RIS-aided non-orthogonal multiple access (NOMA) system, where a RIS is deployed to enhance physical-layer security (PLS) in the presence of an eavesdropper. In order to improve the main link's security, the RIS is deployed between the source and the users, in which a reflecting element separation scheme is developed to aid data transmission of both the cell-center and the cell-edge users. Additionally, the closed-form expressions of secrecy outage probability (SOP) are derived for the proposed RIS-aided NOMA scheme. To obtain more deep insights on the derived results, the asymptotic performance of the derived SOP is analyzed. Moreover, the secrecy diversity order is derived according to the asymptotic approximation in the high signal-to-noise ratio (SNR) and main-to-eavesdropper ratio (MER) regime. Furthermore, based on the derived results, the power allocation coefficient and number of elements are optimized to minimize the system SOP. Simulations demonstrate that the theoretical results match well with the simulation results and the SOP of the proposed scheme is clearly less than that of the conventional orthogonal multiple access (OMA) scheme obviously.
ER -